20010011222021 has 32 divisors (see below), whose sum is σ = 20330424576000. Its totient is φ = 19693160939520.

The previous prime is 20010011221987. The next prime is 20010011222023. The reversal of 20010011222021 is 12022211001002.

It is a cyclic number.

It is not a de Polignac number, because 20010011222021 - 2¹⁴ = 20010011205637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010011221987 and 20010011222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010011222023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7646162705 + ... + 7646165321.

It is an arithmetic number, because the mean of its divisors is an integer number (635325768000).

Almost surely, 2^{20010011222021} is an apocalyptic number.

It is an amenable number.

20010011222021 is a deficient number, since it is larger than the sum of its proper divisors (320413353979).

20010011222021 is a wasteful number, since it uses less digits than its factorization.

20010011222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3989.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20010011222021 its reverse (12022211001002), we get a palindrome (32032222223023).

The spelling of 20010011222021 in words is "twenty trillion, ten billion, eleven million, two hundred twenty-two thousand, twenty-one".